The multilateralization of international investment law has witnessed repeated disappointments over the past six decades. Current negotiations regarding the Investment Chapter within the Trans-Pacific Partnership Agreement may bring about a new promise for this process. It is necessary for the TPP negotiating parties to have a proper understanding of this recent history. Circumstances under which the TPP negotiations are conducted are quite different from those of the past. Thus, it can be assumed that TPP negotiations will be concluded successfully and may have profound implications on the multilateralization of international investment law. Since TPP negotiations have multilateral consequences, several new initiatives have been proposed amongst the TPP negotiating parties, which may help alleviate the ‘legitimacy crisis’ of the past two decades. These initiatives include a new principle of Special and Differential treatment, operative provisions on investment promotion, a Side Agreement on code of conduct of transnational corporations, and an appellate mechanism for reviewing arbitral awards.

최근 전 세계적인 원자력 수요 급증으로 민감 기술의 확산에 대한 우려가 커지고 있다. 원자력 수요 증가에 대처하면서 핵비확산체제를 강화하기 위해，다수의 ‘핵연료주기 다자화’ 방안이 제안되었다. ‘핵연료주기 다자화’ 방안이 실현될 경우，우리나라에 영향을 미칠 것으로 예상된다. 따라서 본 논문에서는 ‘핵연료주기 다자화’ 움직임에 대해 우리나라의 적절한 대응책 마련에 도움을 주기 위해，12가지 기존의 ‘핵연료주기 다자화 방안’ 을 검토하고，우리나라에 미칠 잠재적 영향을 평가하였다.